Maritime-related
air pollution has decreased—as much as 40 percent, depending on the type—since
2005, according to a report released today by the Puget Sound Maritime Air
Forum.
“The
results of the 2011 Emissions Inventory are significant, with substantial
pollution reductions across the board for the Seattle harbor,” said Seattle Port Commissioner
John Creighton. “We still
have work to do in protecting the environment and the health of both our
workers and our communities, but the results of the 2011 inventory show that we
are headed in the right direction.”
The inventory estimated greenhouse
gases, diesel particulate matter and a number of other pollutants, such as
sulfur dioxides and volatile organic compounds. It focused on pollutants
related to ships, harbor vessels, cargo-handling equipment, rail, heavy-duty
trucks and other fleet vehicles associated with maritime activities.
Much of the clean air progress is due
to significant, voluntary investments of the maritime industry and government
agencies in cleaner technology, cleaner fuels and more efficient systems of
operation.
Results from the 2011 inventory will
help guide and focus future emissions reduction investments.Emissions in the
airshed dropped since 2005 from the following pollutants:
·
Nitrogen oxides:
reduced 14 percent
·
Volatile organic
compounds: reduced 40 percent
·
Sulfur oxides:
reduced 14 percent
·
Particulate matter
(PM10): reduced 16 percent
·
Fine particulate
matter (PM2.5): reduced 16 percent
·
Diesel particulate
matter: reduced 16 percent
·
Carbon dioxide:
reduced 5 percent
Overall, emissions
fell for most sources since 2005. Diesel particulate matter emissions are
summarized below:
·
Ocean-going
vessels: reduced 16 percent
·
Harbor vessels:
increased 7 percent
·
Locomotives:
reduced 24 percent
·
Cargo-handling
equipment: reduced 40 percent
·
Heavy-duty
vehicles: reduced 52 percent
·
Fleet vehicles:
reduced 47 percent
In the harbor
vessels sector, which includes ferries, tugs, fishing and recreational boats,
some categories of pollutants increased.This is likely due to a 12 percent
increase in boat traffic, as well as an increase in the use of larger engines,
which have higher emissions.
The maritime industry has adopted a
number of voluntary initiatives to reduce emissions, including switching to
low-sulfur or biodiesel fuels, using shore power, replacing or retrofitting
older engines and improving systems to use equipment more efficiently.
The Northwest Ports Clean Air Strategy, a ground-breaking initiative
of the ports of Tacoma, Seattle and Metro Vancouver, B.C., has helped further
reduce emissions in the Puget Sound and Georgia air basins. Mandatory engine
and fuel standards also have spurred adopting newer engines and cleaner fuels.
Some of the decrease also can be
attributed to fewer ship calls and less cargo resulting from a sluggish
economy.
Inventory results will help focus
future efforts and investments. The ports of Seattle and Tacoma are updating
their Northwest Ports Clean Air Strategy goals based on the inventory results.
Maritime partners will continue efforts
to lower diesel emissions because they pose a public health risk. Exposure to
diesel pollutants can contribute to increased rates of lung cancer, chronic
respiratory and cardiovascular disease and other health effects.
Maritime industry partners continue to
seek ways to reduce emissions from all sources, with particular attention to
ships. While ship-related emissions have dropped, they account for 63 percent
of the maritime-related diesel particulate matter emissions.
The 2011 results do not account for the
North American "Emission Control Area" that went into effect Aug. 1,
2012, requiring ships operating in waters along the Pacific, Gulf and Atlantic
coasts of the United States and Canada to burn cleaner fuels. This regulation
is expected to have a significant effect in further reducing ship-related
emissions.
The Seattle Port Commission will also
soon be considering the next generation, or “Phase 2”, of its Clean Trucks Program. The Commission will be taking a look at a
number of options to incentivize cleaner truck technologies in the harbor,
including a proposal by Commissioner Rob Holland last year to sponsor a pilot
program with respect to trucks powered by compressed natural gas, or CNG.
“We have set the goal
at the Port of Seattle to be the cleanest, most energy efficient port in North
America,” noted Commissioner Creighton.
“I want to thank Commissioner Holland for his efforts working with port
stakeholders –regulatory agencies, manufacturers, shipping and trucking
companies and truck drivers – to look at how the Port of Seattle can continue
to improve air quality for our community.”